# Currently, two providers are supported: "kubernetes" and "istiod".
    # As some platforms may not have kubernetes signing APIs,
    # Istiod is the default
    pilotCertProvider: istiod

    sds:
      # The JWT token for SDS and the aud field of such JWT. See RFC 7519, section 4.1.3.
      # When a CSR is sent from Istio Agent to the CA (e.g. Istiod), this aud is to make sure the